Sound-box.



A. G. J. GONSTABEL.

SOUND BOX.

APPLICATION FILED AUG. 8, 1912.

1,073,96 1 Patented Sept. 23, 1913.

WITNESSES j INVEN Adolph C.J.Co'ns+a %oz L lid 120A 4 ATTORNEYS FFICE.

ADOLPH C. J. CONSTABEL, OF HONOLULU, TERRITORY OF HAWAII.

SOUND-BOX.

Specification of Letters Patent.

Patented Sept. 23, 1913.

Application filed August 8, 1912. Serial No. 714,043.

To all whom it may concern:

Be it known that I, Anotrrr C. J. Con- STABEL, a subject of the Emperor of Germany, and a resident of Honolulu, llawan, have invented a new and Improved Sound- Box, of which the following isa full, clear, and exact description.

This invention relates generally to sound boxes, and more particularly it is directed to one characterized by the use of a resonance-box placed in juxtaposition to the diaphragm but spaced from the same so that a thin layer. of air is provided between the resonance-box and the diaphragm within the sound box.

The principal object of my invention is the provision of a new and improved soundbox containing a resonance'box the parallel walls of which are provided with concentric corrugations and an axial opening substantially axial with the diaphragm. This resonance-box serves as a medium whereby the sound waves set up by the vibratin dia phragm are further developed, whi e the frictional sounds produced by the contact of the needle on the record are reduced to the minimum by the same.

Figure 1 is a vertical sectional view on the line 1--1 of Fig. 2; Fig. 2 is a horizontal sectional view on the line 2-2 of Fig. 1.

The sound-box may be made of any suitable material, in any desirable size, and comprehends a body member 1 of usual construction having a chamber 2. One side of the sound-box is closed by a diaphragm 3 held in position between the resilient members 4, this diaphragm being actuated by a stylus bar 5 of usual construction. The other side of the sound-box is partially closed by a metallic plate 6, preferably of Germansilver, having an opening 7 therein, the opening being concentric with the point of attachment of the stylus bar 5 to the diaphragm 3. The metal plate 6 is preterably mounted between resilient gaskets 8, such as rubber, or other equivalent material.

Adjacent the opening 7 in the plate 6 is a. tube 9 which leads to an amplifying horn common to talking machines. It will be noted that the central axis of the tube 9 is identical with the central axis of the diaphragm 8 at which point the said stylus bar 5 is secured thereto.

Within the chamber 2 in the body, in close proximity and in juxtaposition to the diaphragm 3, spaced from the same by a thin layer of air, is a resonancc-box 10 having preferably the shape of a flattened drum the end walls of which are provided with concentric corrugations as at 11, and the lateral surface of which is referably rounded. These end walls provided with concentric corrugations are substantially parallel to the diaphragm and are provided with axial openings 12 substantially axial with the said diaphragm. The resonancebox is suspended in position, preferably by means of a lug 13 on one side thereof held in position on the body member 11 by means of a screw 14 positioned adjacent the fulcrum of the stylus bar.

\Vhen the sound-box is in use the air be tween the resonance-box and the diaphragm 3 is vibrated through the medium of the stylus bar 5 and the diaphragm, the air set ting the resonancebox in vibration, whereby the proper sounds are intensified and transn'iitted to the tube 9 which leads to the horn.

Having thus described my invention, 1 claim as new and desire to secure by Letters Patent:

1. In a sound-box, a chambered-body member; a diaphragm closing one end of the chamber, the opposite end of the chamher having an outlet to a born; a stylus bar disposed exteriorly to the chamber and associated with the diaphragm; a resonancebox in the chambered body in juxtaposition to the diaphragm but spaced from the same; and means for securing the resonance-box within the chambered body, said resonancebox having parallel walls provided with concentric corrugations and an axial opening substantially axial with the diaphragm. 2. In a sound-box, a chambered-body member having a diaphragm closing one end of the chamber, the opposite end of the same having an outlet to a horn; a stylus bar associated with the diaphragm; a resonance-box in the chambered body in juxtaposition to the diaphragm; and means for securing the resonance-box within the chambered body, said resonance-box being in the shape of a flattened drum, the end walls of which are corrugated, its lateral surface rounded, and having an axial opening.

3. In a sound-box, a chambered-body member; a diaphragm closing one end of the chamber, the other end having an outlet to a horn; a stylus bar associated with the diaphragm; a resonance-box in the chambered body in juxtaposition to the diaphragm; and means for securing the resonance-box within the chambered body, said resonance-box having concentrically corrugated walls substantially parallel to the diaphragm, each of saidswalls having an axial opening substantially axial with the diaphragm. I

4. In a sound-box, a chambered-body member; a diaphragm associated with the chambered body; a stylus bar associated with the diaphragm and the chambered body; a resonance-box within the chambered body in juxtaposition to the diaphragm and spaced from the same; and means for securing said resonance-box in said chambered body, said resonance-box having the shape of a flattened drum the end walls of which. are substantially parallel to the diaphragm and provided with concentric corrugations the centers of which. are substantially in the axis of the diaphragm, said walls each having a central opening substantially axial with the axis of the diaphragm, and the lateral surface of said drum being rounded.

In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.

ADOLPH c. J. GONSTABEL.

Witnesses B. CLEGHOBN, F. A. BAToHELoR.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents,

Washington, D. G. t 

